Lesson 10: Configuring IPv4 and IPv6 Addressing

MOAC 70-410: Installing and Configuring

Windows Server 2012

Overview• Exam Objective 4.1: Configure IPv4 and IPv6

Addressing

• IPv4 Addressing

• IPv6 Addressing

• Planning an IP Transition

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IPv4 AddressingLesson 10: Configuring IPv4 and IPv6 Addressing

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IPv4 Addressing• IP Address

o 32-bit address

o Four 8-bit decimal values between 0 and 255 separated by periods (octets)

• Subnet Masko 32-bit value of 0’s and 1’so 1’s designate network bits, 0’s are host bits

Network Host

Examples: IP Address 192.168.43.100

Subnet Mask 255.255.255.0

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IPv4 Classful Addressing

The three IPv4 address classes

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IPv4 Address Classes

IP Address Class Class A Class B Class C

First bit values (binary) 0 10 110

First byte value (decimal) 0–127 128–191 192–223

Number of network identifier bits 8 16 24

Number of host identifier bits 24 16 8

Number of possible networks 126 16,384 2,097,152

Number of possible hosts 16,777,214 65,534 254

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Classless Inter-Domain Routing

• Classful addressing was gradually phased

out by a series of subnetting methods,

including variable length subnet masking

(VLSM) and, eventually, Classless Inter-

Domain Routing (CIDR).

• CIDR is a subnetting method that enables

administrators to place the division between

the network bits and the host bits anywhere

in the address, not just between octets.

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CIDRCIDR notation: 192.168.43.0/26

• Where the /26 means 26 bits of the address

are used as the network identifier

• In binary, the subnet mask translates to:

11111111.11111111.1111111.11000000

or 255.255.255.192 in decimal

• This would allow us to divide this address into

4 networks, each with up to 62 hosts

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CIDR 192.168.43.0/26 Networks

Network

Address

Starting IP

Address

Ending IP

AddressSubnet Mask

192.168.43.0 192.168.43.1 192.168.43.62 255.255.255.192

192.168.43.64 192.168.43.65 192.168.43.126 255.255.255.192

192.168.43.128 192.168.43.129 192.168.43.190 255.255.255.192

192.168.43.192 192.168.43.193 192.168.43.254 255.255.255.192

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Public and Private IPv4 Addressing

• Registered IP addresses are not necessary

for workstations that merely access

resources on the Internet

• The three blocks of addresses allocated for

private use are as follows:

o 10.0.0.0/8

o 172.16.0.0/12

o 192.168.0.0/16

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